水射流-机械滚刀复合破岩影响因素  

Influencing Factors of Water Jet Mechanical Hob Composite Rock Breaking

作　　者：韩伟锋 HAN Wei-feng(State Key Laboratory of Shield Machine and Boring Technology,Zhengzhou 450001,China;China Railway Tunnel Group Co.,Ltd.,Guangzhou 511400,China)

机构地区：[1]盾构及掘进技术国家重点实验室,郑州450001 [2]中铁隧道局集团有限公司,广州511400

出　　处：《科学技术与工程》2022年第27期11858-11863,共6页Science Technology and Engineering

基　　金：国家重点研发计划(2020YFB1712105)。

摘　　要：针对极硬岩、极端软硬不均等特殊地层,滚刀破岩效率低下,刀具磨损(损坏)严重,掘进机换刀频繁,作业效率低的问题,通过搭建水射流滚刀复合破岩实验系统,针对不同花岗岩,采用不同的机械滚刀间距及水射流辅助破岩方式,开展了纯机械滚刀破岩、水射流切割岩石和水射流机械滚刀复合破岩实验研究,探明了水射流与机械滚刀复合破岩水射流破岩切缝深度、刀具三向力及破岩比能变化规律,为水射流破岩技术在隧道掘进机工程应用提供指导。In view of the problems of extremely hard rock, extremely soft and hard uneven special stratum, low rock breaking efficiency of hob, serious tool wear(damage), frequent tool change of roadheader and low operation efficiency, through the construction of water jet hob composite rock breaking experimental system, for non granite, different mechanical hob spacing and water jet assisted rock breaking methods were adopted to carry out pure mechanical hob rock breaking. The experimental study on rock breaking by water jet cutting and combined rock breaking by water jet mechanical hob had proved the variation law of rock breaking seam depth, three-dimensional force and rock breaking specific energy of water jet and mechanical hob, which provides guidance for the application of water jet rock breaking technology in tunnel boring machine engineering.

关 键 词：硬岩 水射流 机械滚刀 刀具三向力 比能 

分 类 号：TD263.3[矿业工程—矿井建设] TD313